Brightness vs. Exposure

[kris]

In previous version of LR and ACR the exposure and brightness sliders actually did a similar, and overlapping, job. In the new 2012 process the brightness slider has been removed. For comparison the basic sliders are

LR4/ACR7, using the new 2012 process:
Exposure
Contrast
Highlights
Shadows
Whites
Blacks

LR3/ACR6, and previous using process 2003 or 2010:
Exposure
Recovery
Fill Light
Blacks
Brightness
Contrast


LR4/ACR7 handle the previous processes, so if a file processed with LR3/ACR6 is opened with LR4/ACR7 you will see the LR3/ACR6 sliders.

Andrea

[xpatUSA]

"Exposure shifts all levels. In fact it scales all levels by a constant multiplying factor."

Hmm - seems pretty close to "Exposure shifts the values for the entire image up or down"

It is not "pretty close" at all: changing the gain of a transfer characterist is completely different to changing it's zero point (offset).

_GUI_'s explanation was accurate, clear, to the point, and needed no further comment, IMHO.